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Firmware update problem affecting use of 20mm lens?

Discussion in 'Olympus Cameras' started by giuseppe, Apr 24, 2010.

  1. giuseppe

    giuseppe New to Mu-43

    9
    Apr 4, 2010
    I have owned an E-PL1 (with the kit zoom) for about a month, and about a week ago I bought a Panasonic 20mm f1.7 pancake lens for it. Everything worked beautifully. But on Thursday, I downloaded (successfully) the firmware update to the E-PL1 and now ALL photos with the 20mm pancake lens vignette in all four corners, regardless of camera settings! Its as if the camera is set permanently to the "pinhole" setting. This does not appear to be a problem with the kit zoom. Before I (sadly) return the Panasonic 20, does anyone have any thoughts on why this happened, or have you had a similar experience?
    Thanks, Giuseppe
     
  2. Streetshooter

    Streetshooter Administrator Emeritus

    Dec 15, 2009
    Phila, Pa USA
    I will look at my image from the Pen 1 & 2.
    Maybe BB could chime in...
    That's her setup exactly.
    Shooter
     
  3. BBW

    BBW Super Moderator Emeritus

    Trying it out right now.
     
  4. BBW

    BBW Super Moderator Emeritus

    No, I do not see any vignetting. Of course now I am staring at everything. Here are two photos of the same thing taken for test purposes only so no C & C, thank you very much.:wink:

    One is taken with the 20mm and the other with the 14-42 zoom.
     

    Attached Files:

  5. BBW

    BBW Super Moderator Emeritus

    Here is another taken outside, just with the 20mm:

    <a href="http://www.flickr.com/photos/otra/4547815965/" title="P4240905 test photo by Otra2004, on Flickr">"1024" height="768" alt="P4240905 test photo" /></a>
     
  6. Streetshooter

    Streetshooter Administrator Emeritus

    Dec 15, 2009
    Phila, Pa USA
    Thanks Sis,
    Now we need to determine his shooting/processing method.

    Jpeg vrs raw... What pp software?
     
  7. BBW

    BBW Super Moderator Emeritus

    Just FYI, these are jpeg and no pping but uploaded into Aperture 3, as it was strictly a test. Let me know if you need anymore details from me.
     
  8. giuseppe

    giuseppe New to Mu-43

    9
    Apr 4, 2010
    BBW,

    I've done some testing (with the Panasonic 20 pancake on the E-PL1) and discovered that the vignetting is very pronounced at f1.7 and hardly noticeable at f5.6 or higher. If you get a chance, you might give it a try by shooting a blank evenly lit subject - like a white wall - and see if you get the same results. On my camera it is most dramatic on the Art-Grainy Film setting, since that setting emphasizes contrast, but the difference is clearly visible on Aperture Priority or Program mode, etc.

    I'm curious to know if this is a problem unique to me or if all 20's on PL1's do the same. And at this point I'm not sure if this has anything to do with the firmware update or not. I'd download my photo samples but I've not figured out yet how to do that.

    Thanks for giving this your time....
     
  9. Streetshooter

    Streetshooter Administrator Emeritus

    Dec 15, 2009
    Phila, Pa USA
    The art grainy filter has a vignette in the filter itself.
    Do you see this on Raw or in a straight jpg?
     
  10. giuseppe

    giuseppe New to Mu-43

    9
    Apr 4, 2010
    My shooting has been all straight jpeg so far.
     
  11. giuseppe

    giuseppe New to Mu-43

    9
    Apr 4, 2010
    Streetshooter,

    I've done a lot of shooting using the grainy film art filter through the Olympus 14-42 zoom kit lens and there was NO vignetting. I've only seen vignetting with the pinhole art filter (until I used the 20 pancake).
     
  12. BBW

    BBW Super Moderator Emeritus

    Here is that same scene with the rabbit painting which has good light I have to add, and I took it at ISO 200 f/1.7 -0.3 ev at 1/640 of a second. It does appear that there might be a bit at that f stop.

    I have to tell you that I really never use that f stop, as far as my memory tells me and my quick look at some photos. I don't think I have any pre-updated firmware shots at that f stop but I do have some at f/2.8 and here is one - the one with the dogs and my husband lying on his back.

    Maybe Brian Mosely can join in the fun here because he has the E-PL1 and the 20mm, too.

    What I see doesn't bother me and interestingly I did not see it at all with the rabbit shot while viewing it through the EVF in replay.

    P.S. These were taken using Aperture Priority.
     

    Attached Files:

  13. Streetshooter

    Streetshooter Administrator Emeritus

    Dec 15, 2009
    Phila, Pa USA
    Giuseppe,
    I made this thread a sticky and rated it 5 star to draw attention from other members. This is an issue worth bringing up and maybe we can get some more feedback...
    Hang in there, I know it ain't easy and it ain't pretty but be strong...help is on the way...
    Shooter
     
  14. BBW

    BBW Super Moderator Emeritus

    OK, here are three shots of the same, soon to be painted, side of our house.
    ISO 200 f/1.7 @ 1/1250
    <a href="http://www.flickr.com/photos/otra/4548621759/" title="P4240919 20mm f/1.7 by Otra2004, on Flickr"> 4548621759_31d16d9488_b. "1024" height="768" alt="P4240919 20mm f/1.7" /></a>

    ISO 200 f/2.8 @ 1/500
    <a href="http://www.flickr.com/photos/otra/4548621837/" title="P4240920 20mm f/2.8 by Otra2004, on Flickr">"1024" height="768" alt="P4240920 20mm f/2.8" /></a>

    and ISO 200 f/5.6 @ 1/125
    <a href="http://www.flickr.com/photos/otra/4549256506/" title="P4240921 20mm f/5.6 by Otra2004, on Flickr">"1024" height="768" alt="P4240921 20mm f/5.6" /></a>
     
  15. BBW

    BBW Super Moderator Emeritus

    I have just been told that vignetting with the 20mm at f/1.7 is a known attribute, so apparently this has nothing to do with the firmware update. I expect Brian Mosely will comment tomorrow, as to the veracity of this.:wink: He also tells me there's a vignetting control for jpegs in the little "spanner" or as we colonials call it "wrench" menu. I would, of course, never have known this.:redface:

    It really doesn't show up with my regular photos such as this one also ISO 200 f/1.7 @ 1/640

    <a href="http://www.flickr.com/photos/otra/4549288666/" title="P4240918 lilac test 20mm 1.7 by Otra2004, on Flickr"> 4549288666_850e497c53_b. "1024" height="768" alt="P4240918 lilac test 20mm 1.7" /></a>
     
  16. giuseppe

    giuseppe New to Mu-43

    9
    Apr 4, 2010
    Some more web research turns up a thread on 20mm pancake vignetting at dpreview:

    http://forums.dpreview.com/forums/read.aspforum=1041&message=34520374

    and dpreview's own test of the lens shows that it vignettes (they call it falloff)
    as much as 1.7 stops (THAT'S A LOT!) in the corners at maximum aperture (f1.7 coincidentally):

    Panasonic Lumix G 20mm F1.7 ASPH Lens Review: 3. Test results: Digital Photography Review

    So, since the Oly 17mm only opens to f2.8, I may just have to live with the vignetting...???... The thing is, unlike most photographers, I do most of my shooting indoors and often in very dim light. That's one reason I bought the 20mm pancake.
     
  17. giuseppe

    giuseppe New to Mu-43

    9
    Apr 4, 2010
    Sorry about the bad link (the first one). I think the second works fine....
     
  18. noodlehaus

    noodlehaus Mu-43 Veteran

    202
    Feb 14, 2010
    Hi Giuseppe,

    I've been using the 20mm f1.7 a lot with light backgrounds and yes, at wide open, vignetting is very noticeable especially if you adjust the shadows in your raw. This is my observation for both BEFORE and AFTER the firmware update :) It's also what I like about the lens :)

    I hope this helps put you at ease :)
     
  19. Boyzo

    Boyzo Mu-43 Top Veteran

    784
    Mar 3, 2010
    This problem may be less on a GF1 with camera compensation

    For Oly...

    Shading compensation is suppose to help

    Link here E-PL1
    Olympus E-PL1 Review | Digital Camera Resource Page

    <>
    # Quality/Color/WB

    * Noise reduction (Off, on, auto) - for long exposures
    * Noise filter (Off, low, standard, high) - for everything else
    * White balance (Auto, daylight, shade, cloudy, tungsten, fluorescent x 3, flash, one-touch, color temperature) - see below
    * All white balance compensation
    o All set (-7 to +7) - in either the amber/blue or green/magenta directions
    o All reset
    * Color space (sRGB, AdobeRGB)
    * Shading compensation (on/off) - supposed to help reduce vignetting
    * Image quality set (Large/Medium/Small, Superfine/fine/normal/basic) - select the size and quality of the four JPEG image quality slots
    * Pixel count - select the resolution for these two sizes
    o Middle (3200 x 2400, 2560 x 1920, 1600 x 1200)
    o Small (1280 x 960, 1024 x 768, 640 x 480)
    <>
     
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  20. Brian Mosley

    Brian Mosley Administrator Emeritus

    Dec 15, 2009
    Sorry to be brief, just dashing for the door... but yes, it's a known attribute of the 20mm f1.7, and there's an option for Olympus jpegs (and raw through Olympus Master/Studio) under :

    Cog Menu G->SHADING COMP.->ON

    To give shading compensation.

    Cheers

    Brian
     
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